Need help in reverting Taig Jailbreak

After installing Taig Jailbreak for iOS 8.1.2 my iPhone 6 plus is not syncing with my iTunes. On my Macbook Pro the iPhone is shown in the iTunes as grayed out icon. But in a windows machine it is showing correctly. The only thing in the windows machine is the sync takes forever and it is stuck every time.

I want to restore my phone to original. I have mobile terminal in the iPhone 6 plus. Is there any way I can revert the jailbreak out of my iPhone without the help of iTunes?